Projects 11-28@20x




Macpass Project

Mactung Project

Gayna Project


Fireweed owns three critical metals projects in northern Canada.

  • Macpass is one of the largest undeveloped zinc projects in the world.*
  • Mactung is the largest high-grade tungsten deposit in the world.*
  • Gayna has great exploration potential for zinc, germanium, gallium, lead and silver.

Fireweed will sustainably advance its critical metals projects towards mine development through progressive leadership, innovation and collaboration.

Why are critical metals important? What are zinc and tungsten used for?

* References to relative size and grade of the Mactung resources and Macpass resources in comparison to other tungsten and zinc deposits elsewhere in the world, respectively, are based on review of the Standard & Poor’s Global Market Intelligence Capital IQ database.

For details, see Fireweed Technical Report titled “NI 43-101 Technical Report Macmillan Pass Project Yukon Territory Canada” filed on on July 9, 2018, and Fireweed News Release dated May 23, 2018. This Technical Report includes a Preliminary Economic Analysis disclosing an economic analysis of mineral resources that is preliminary in nature and does not include any mineral reserves. It is equally emphasized that the mineral resources disclosed within this Technical Report are not mineral reserves and do not have demonstrated economic viability.

For details, see Fireweed news release dated June 13, 2023 “Fireweed Metals Announces Mineral Resources for the Mactung Project: the Largest High-Grade Tungsten Deposit in the World” and the technical report entitled “NI 43-101 Technical Report, Mactung Project, Yukon Territory, Canada,” with effective date July 28, 2023 filed on

Technical information on this page has been approved by Fireweed’s VP Geology, Dr. Jack Milton, P.Geo. (BC), a ‘Qualified Person’ as defined under Canadian National Instrument 43-101. For full disclosure please visit our cautionary statements page.